摘要
由砂石料分选后剩余的大粒径卵石颗粒经过自然倾倒和沉积形成的土层黏聚力低/呈松散状。对地铁区间穿越该土层的技术方案进行研究,列举矿山暗挖法、全区间矿山暗挖法、放坡明挖法、基坑支护明挖法、地表加固(袖阀管注浆)盾构法5种技术方案,分析、对比各方案工期、安全、技术可行性和费用测算,得出最为经济、合理的技术方案。
The cohesive force of the large-sized pebble particles remaining after sand and gravel sorting through natural dumping and sedimentation is low and loose.The technical scheme of the subway section crossing the soil layer is studied,and the mining underground excavation method,the full-range mine excavation method,the grading and clearing method,the foundation excavation support and the excavation method,and the surface reinforcement(sleeve valve tube grouting)shield are listed.Five technical schemes are constructed to analyze and compare the schedules,safety,technical feasibility and cost calculations of each scheme,and the most economical and reasonable technical solutions are obtained.
作者
张志华
武建华
ZHANG Zhihua;WU Jianhua(CCCC Investment Co.,Ltd.,Beijing 100029,China)
出处
《施工技术》
CAS
2018年第A04期1535-1536,共2页
Construction Technology
关键词
地铁
隧道
基坑
支护
技术方案
subway
tunnel
foundation excavation
support
technical solution
